You can
put this solution on YOUR website!
The line whose equation is x = 7 is this green vertical line:
It has no slope and no y-intercept, thus it cannot be written
in the slope-intercept form y=mx+b
---------------------------
The line whose equation is y = 4 is this green horizontal line:
It has slope = 0 and y-intercept (0,4). It can be written
in the slope-intercept form
y = mx + b
as
y = 0x + 4
Edwin
